Why is my edited video not rendering all as one?
I do not have much of an answer for the malfunction, except that your frame numbers are huge. The blender manual recommends rendering as frames if it is longer than 2,000 frames, but in this case I recommend rendering it in parts.
PS: The question does not have very clear information, and leaves alot of questions for the answerers to ask. What exactly do you mean by ghost? Does the video show 25 minutes of blank, or does the player just skip ahead? What codecs are you using with FFmpeg? There are several available. How do you do the pan and zooms?
That aside, what is your operating system and graphics card?